BERLIN, March 25 -- German police arrested two men in connection with Tuesday's terror attacks in Brussels, German media Spiegel Online reported on Friday.

In the area of Giessen, a town in the German federal state of Hesse, German police arrested on Wednesday evening a man, who had received two suspicious SMS on his phone on the same day of Brussels attacks.

While one SMS contained the name of the suicide bomber Khalid El Bakraoui, the another message only one word "fin", the French word for "the end".

According to the report, the later message was evidently posted just three minutes before Bakraoui set off bombs in a metro station in Brussels.

The investigators are now trying to clarify how this man might be associated with the Brussels bombings on Tuesday.

Another arrest occurred in the German city of Dusseldorf after a special task force of German police took Samir E. on Thursday afternoon.

As Spiegel Online reported, just as the Brussels suicide bomber Khalid El Bakraoui, Samir E. was also apprehended in last summer by the Turkish authorities at the border area between Turkey and Syria, as they were suspected of wishing to take part in the Syrian conflicts on the side of the Islamists or having taken part.

Both were deported in the same plane to Amsterdam where they had begun their trip to Turkey.

The German authorities are now questioning whether the two had a closer acquaintance or were even journeyed together.

Two suicide bombers who set off explosions at Brussels airport and a metro station on Tuesday have been reportedly identified as brothers Khalid and Brahim El Bakraoui and have direct links with the Paris terror attacks last November.

The twin attacks on Tuesday have killed at least 31 people and injured more than 300 others.